Alma’s statement about “continu[ing]” is a working definition of enduring to the end. He then defines ideal character traits. Shiblon should be “diligent and temperate in all things.” Diligence continues the concept of “enduring.” Having begun to follow the gospel path, Shiblon should continue.
Reference: The phrase “temperate in all things” echoes 1 Corinthians 9:25: “And every man that striveth for the mastery is temperate in all things.” Paul’s context tells us a little more about the reason for temperance. As part of a culture emphasizing a collectivist personality, high value was placed on preservation of community stability. In that context, “temperance” is a high value for those who “striv[e] for the mastery.” When we master ourselves, we are able to control the widest ranges of our moods or actions. We become temperate in that we are under control. We are not excessively angry, because we are able to control our anger. Social equilibrium is maintained because the person has controlled his or her excesses.